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/*
* This file is part of the libopencm3_cpp_extensions project.
* hosted at http://github.com/thirdpin/libopencm3_cpp_extensions
*
* Copyright (C) 2016 Third Pin LLC
* Written by Anastasiia Lazareva <a.lazareva@thirdpin.ru>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
/*
USART C++ Wrapper of libopencm3 library for STM32F2, STM32F4
*/
#ifndef CM3CPP_USART_RB_H_
#define CM3CPP_USART_RB_H_
/**************************************************************************************************
* CM3CPP INCLUDES
*************************************************************************************************/
#include "usart.hpp"
#include "utils/round_buffer.hpp"
namespace cm3cpp {
namespace usart {
class UsartRb : public Usart
{
public:
utils::RoundBuffer* rb_in;
utils::RoundBuffer* rb_out;
UsartRb(LowLevelConfig config,
Settings settings,
uint32_t rb_in_size,
uint32_t rb_out_size);
CM3CPP_EXPLISIT_DESTRUCTOR(UsartRb)
void start_send() { usart_enable_tx_interrupt(_usart); }
void receive_handler()
{
if (interrupt_source_rx()) {
rb_in->push(read());
}
}
void transmit_handler()
{
if (interrupt_source_tx()) {
if (rb_out->get_count()) {
write(rb_out->pop());
}
else {
usart_disable_tx_interrupt(_usart);
}
}
}
void inirq()
{
receive_handler();
transmit_handler();
}
};
} // namespace usart
} // namespace cm3cpp
#endif /* CM3CPP_USART_RB_H_ */
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